It's been asserted, on crude phylogeographic grounds, that K-M526 originated in South East Asia. A SE Asian origin for K-M526 is credible if you ignore the rest of the Y phylogeny, starting with K-M9, and all other available information. Sadly for Hector, reality, with this recent publication, has again chosen to side with "Eurocentrists".

I don't expect the Hectors will gracefully accept their beating, but to others the presence of a previously unknown branch of K(xLT) in Siberia 45,000 years ago should be a pretty clear signal that the idea of a 500 year sprint from West or Central Asia to an already-inhabited SE Asia, followed, after an indefinite pause, by a repopulating of the world from Sundaland (if not the islands of Wallacea), all while failing to carry any trace of Denisovan admixture back to the future civilized world is an unnecessary and improbable fantasy.

The cline of Denisovan admixture, from faint, highly-selected remnants in mainland SE Asia to maxima among Melanesians and Australian Aborigines, has always pointed to gene flow into the region after its initial settlement rather than out of it, the K-bearers being one obvious candidate for the major source of this dilution. I'd also say it's more likely than not that they (an M526-carrying population of Central Asian origin) are the ones who brought culture to Hector's ancestors.